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© 2026 cohaga AG · All Rights Reserved · St. Gallen, Switzerland · Imprint745,888 companies indexed · Last updated: today
DirectoryConstruction & ArchitectureArchitecture FirmsBernWinnewisser Baumanagement AG
Winnewisser Baumanagement AG Logo
Verified· 3 sourcesTrust Score
Summary

About the company

Winnewisser Baumanagement AG provides project and construction management services across the building lifecycle. It acts as overall execution lead or as responsible party for project phases, coordinating owners, architects, planners, contractors and specialists to manage quality, costs and schedules and to reduce project risks.

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Products & services

Industry:Architecture Firms
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4.4/5

Winnewisser Baumanagement AG

6
Construction management
Construction management for building projects, overall management of execution, partial project responsibility, coordination and monitoring of quality, costs and schedules in all construction phases.
Overall planning
Overall planning as central coordination of development, design and execution with interdisciplinary teams and external partners for a coordinated project process.
Real estate development
Real estate development with support in the pre-project and planning phase, considering schedule- and cost-relevant aspects and minimizing risks.
Construction client representation
Construction client representation as an objective control instrument, with support and guidance for the client throughout the project phases.
Total contractor
Total contracting as an economical complete solution for building projects, with overall responsibility for design and execution.
Real estate properties
Real estate properties as an asset, with services related to real estate across the life cycle and in managing existing stock.
Trust & reputation

ranQ Trust Score of Winnewisser Baumanagement AG: 4.4 out of 5.0

Trust Score4.4/ 5.0

Very high

x

Data basis 96% · As of October 2026

Winnewisser Baumanagement AG scores 79.4 out of 100 points in the Reputation area of the ranQ Trust Score. This area carries 42% of the weighting.
x
CriterionValueWeight
  • Review quality: The average rating across all connected sources, smoothed against the industry mean. So 5.0 stars from three reviews do not outrank 4.7 from three hundred.77.324%
  • Review volume: The number of reviews across all sources. The scale is logarithmic: the first reviews count the most, and the maximum is reached at 50 reviews.72.110%
  • Review recency: The age of the most recent review. Two-year-old reviews deliberately sit in the middle, because that is normal for Swiss SMEs. Only after three years without a new voice does the value drop markedly.95.08%
Winnewisser Baumanagement AG scores 92.3 out of 100 points in the Substance area of the ranQ Trust Score. This area carries 28% of the weighting.
x
CriterionValueWeight
  • Establishment: Years since founding or brand launch, logarithmic. The maximum is reached at 15 years.100.012%
  • Company size: The headcount band, researched by ranQ or stated by the company. It is scored in steps rather than by head count, because the data only provides bands.82.07%
Winnewisser Baumanagement AG scores 85.0 out of 100 points in the Identity area of the ranQ Trust Score. This area carries 22% of the weighting.
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CriterionValueWeight
  • Verification: Official register entry (commercial register with UID or professional-body record, 55 points), confirmed domain (20 points) and confirmed ranQ profile (up to 25 points, depending on completeness).85.022%
Winnewisser Baumanagement AG scores 68.6 out of 100 points in the Visibility area of the ranQ Trust Score. This area carries 8% of the weighting.
x
CriterionValueWeight
  • Website authority: Ahrefs' Domain Rating measures, on a scale of 0 to 100, how strongly a website is linked from other websites. For Swiss SMEs the range up to 40 is typical; the maximum is reached at 35.68.64%
  • Media authority: No data point — the criterion is taken out of the weighting and does not lower the score.—4%
Qualifications+0.00

Winnewisser Baumanagement AG reaches a ranQ Trust Score of 4.4 out of 5.0 — rated «Very high». The rating draws, among other things, on 4.7 out of 5 stars from 16 customer reviews. The data basis is 96%, so the score is backed by part of the criteria. As of October 2026.

The Trust Score cannot be bought and is calculated from publicly verifiable data.

Reviews

Aggregated rating

Aggregated rating
4.7
of 5

Aggregated from 16 reviews across all connected sources

Sources
GGoogle4.716
★TrustpilotSoon
PProvenExpertSoon

Further sources are added continuously and factored into the ranQ Rating.

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Location

Zentweg 21d
3006 Bern
Opening hours
Mon
08:00 - 12:00, 13:00 - 17:00
Tue
08:00 - 12:00, 13:00 - 17:00
Wed
08:00 - 12:00, 13:00 - 17:00
Thu
08:00 - 12:00, 13:00 - 17:00
Fri
08:00 - 12:00, 13:00 - 17:00
Sat
Closed
Sun
Closed

At a glance

Legal form
Corporation
UID
CHE-115.572.323
Founded
2010 · 16 years
Last commercial register change
May 27, 2025
Employees
21 to 50
Legal form: Graded by liability and disclosure. The weight is kept small: a sole proprietorship is not a dubious company, it is just liable differently.
100.0
6%
  • Branch offices: Branch offices linked in the commercial register. Having none is normal and costs no points.70.03%
    • Full methodology

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